Drain-pipe.



vL. vC. ERBES.

DRAIN PIPE.

APPLICATION FILED JULY 15, 1912.

1,096,230. Patented May 12, 191 1 SOIL CLAY

GRAVEL.

WW. JV, of, jm

\OLUMBIA PLANOQRAPM CQJVASHINGTON. D c.

LOUIS C. ERBES, OF ST. PAUL, MINNESOTA.

DRAIN-PIPE.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed July 15, 1912. SeriatNo. 709,442.

'do hereby declare the fol'iowing to be a full,

clear, and exact descriptionof the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

Particularly, my invention has for its object to provide an improved upright drain pipe or stack, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

Upright drain pipes have hitherto been employed, and this type of drain pipes, as is well known, are extended, usually, from a point near the surface, through the surface soil, through a clay stratum, where such is available, and down into a stratum of grave] or sand. In operation, they carry the surface water through the clay stratum into the gravel.

My invention, in its preferred form, is illustrated in the accompanying drawings wherein like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a vertical section showing the improved drain pipe in position; Fig. 2 is a horizontal section taken on. the line 3 r on Fig. 1 some parts being removed: Fig. 3 is a horizontal section taken on the line :0 on Fig. 1; Fig. is a fragmentary view in elevation showing a portion of one of the sections of the drain pipe; and Fig. is a view corresponding to Fig. l illustrating a slightly modified construction of the water passages formed in the surface of the drain pipe.

div improved drain pipe is constructed of sheet metal and is preferably made up of a multiplicity of sections, such as those indicated at 1, and 3, the said sections having telescoped joints, and the said joints having corrugations 4.- adapted to be sprung together by forcing the one pipe section endwise upon the other.

As an important feature of this invention, the drain pipe is made circumferentially expansible so that it will not be broken when water is frozen within the same. This expansibility may be provided for in different ways, but is preferably afforded by a novel arrangement ofslits, which latter, also, serve as water passages adapting water to run either into or from the pipe. In the construction illustrated in Figs. 1 to inclusive, the said water passages are in the form of longitudinally extended slits 5 that are in staggered arrangement and overlapped so as to make the pipe expansible from end to end. Preferably, also, the pipe sections are galvanized after the slits 5 are formed thereln, so that the plating material will cover the edges of the slits and thereby prevent corrosion from being started at the edges of the slits. In the modified arrangement illustrated in Fig. 5, the water passages are formed by approximately U-shaped slits 5*.

The drain pipe made up of several sections 1, 2 and 3, is extended from the point, preferably below the surface of the surface or upper soil, down through the clay or hard pan stratum, and into the gravel or sand stratum. The upper end of the drain pipe is extended into and covered by a surrounding cap or housing 6, the lower end of which is opened and the top of which is closed, preferably by a cover plate 7. The body of the cap 6 is rigidly secured to the upper end of the drain pipe but spaced therefrom by upper and lower slide brackets 8 and 9. With this construction, the surface water which soaks into the upper soil will pass upward through the bottom of the cap 6 and will seep through the upper slits 5 or overflow the upper end of the drain pipe, and thereby pass into the drain pipe. In fact, there can be a seepage of water into the drain pipe through any part of theupper portion of the drain pipe, wherever there is sufficient external water pressure to produce this action; and on the other hand, there can be a free leakage of water from the lower portion of the drain pipe, wherever the internal water pressure is sufficient to overcome any external pressure. The result is, of course, that there is a constant downward flow or drainage of the water, and the drain pipe affords means for rapidly conducting the water through the clay stratum.

A drain pipe or stack of this character is adapted for use generally where water accumulation under the surface soil, and for most purposes it will be desirable that the drain pipe act continuously, throughout the year. In some localities, however, such as in meadows or in low grounds where wire grass or rice, or other crops requiring stand ing water are grown, it is desirable at certain times of the year to maintain more or less water on the surface of the ground, and at other times of the year such as at harvest, it is desirable to drain the land. To meet these conditions, I provide within the drain pipe a movable or adjustable stopper which, when raised, throws the drain pipe into action, and which, when lowered into the clay or hard pan stratum, throws the drain pipe nearly or quite out of action. In the drawings, this so-called stopper is in the form of a piston-like plug 10 arranged to work within the upper section 1 of the drain pipe and provided with a stem 11 extended upward. through the cover '7 of the cap 6 to a point above the surface of the ground. ing the stopper 10 in different vertical adwith longitudinally spaced perforations 12 and extend the said stem through a stop As a convenient means for hold- 1 plate 13 located on the top of the surface soil. A pin or bolt 14 is adapted to be passed through the perforation 12 which is located just above the plate 13. By reference to Fig. 1, it will be noted that the clearance between the top of the upper pipe section 1 and the cover 7 is such that the stopper 10 it will not interfere with the overflow of water into the upper end of the said pipe section. The stem 11, in addition to the portant purpose, to-wit, it will conduct heat from the surface of the ground into the tom, brackets or arms rigidly connecting said cap to the upper end of said drain pipe, and the said cap having a removable cover.

2. The combination with an upright drain pipe, of an adjustable stopper working therein.

3. The combination with an upright drain pipe, of a cap within which the upper end of said drain pipe is located, and a stopper longitudinally adjustable within said drain pipe and having a stem extended upward through the top of said cap to a point above the surface of the ground.

4. The combination with an upright drain pipe, of a cap within which the upper end of said drain pipe is located, and a stopper longitudinally adjustable within said drain pipe and having a stem extended upward through the top of said cap to a justments, I provide the stem 11 thereof,

point above the surface of the ground, the said stein having longitluhnally spaced per- I forations, a stop plate at the surface of the ground through which said stem is passed, and a pin or bolt insertible through any of said perforations of said stein above said stop plate.

The combination with a drain pipe, the upper end of which terinina-tes below I the ground, of a stem extending from the may be moved to a point entirely above the upper end. of said upper pipe section, where interior of said drain pipe upward to av point above the ground and serving to conduct heat from the surface into the pipe.

6. The combination. with a drain pipe 3 having its upper end below the surface of function already noted, serves another nnupper end of the drain pipe, so that in the i springtime, it will hasten the thawing of ice frozen during the winter within the pipe.

What I claim is:

l. The combination with an upright metallic drain pipe having a multiplicity of 3 water passages in its body, of a cap within which the upper end of said drain pipe is located, the said cap being open in its botv the ground and provided with a surrounding cap open at its bottom and having its upper surface also below the ground, of a stem extending from the interior of the said pipe up to a point above the ground for conducting heat into the pipe.

In testimony whereof I aflix my signature in presence of two witnesses.

LOUIS (.7. FIRE E9.

Witnesses BERNICE G. WHEELER, HARRY D. KILGouE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

